Method for testing effective influence range of additional heavy tamping during roadbed compaction

Abstract

The invention discloses a method for testing the effective influence range of additional heavy tamping during roadbed compaction. The method for testing the effective influence range of additional heavy tamping during roadbed compaction comprises the following steps that S1, an earth pressure cell is buried; S2, data measured by the earth pressure cell in the heavy tamping process of a roadbed areacquired; S3, and the effective reinforcing depth and the horizontal influence range in the heavy tamping process are analyzed according to the acquired data. By adoption of the method for testing the effective influence range of additional heavy tamping during roadbed compaction, digitization of the additional heavy tamping effect of a high-fill roadbed can be achieved, the effective reinforcingdepths and the horizontal influence ranges under different degrees of tamping energy are reasonably determined, and the problems that resource waste is caused by unreasonable selection of the tampinginterval and the tamping energy in the heavy tamping process, and the construction progress is affected are solved.

Description

technical field [0001] The invention relates to the technical field of roadbed dynamic compaction, in particular to a method for testing the effective influence range of roadbed compaction and dynamic compaction tracking. Background technique [0002] The subgrade is a structure that bears the load of the upper road surface and transmits the load to the lower foundation. The strength of the subgrade directly affects the stability of the road structure, and the degree of compaction of the subgrade filler is an important factor affecting the strength of the subgrade. By compacting the subgrade soil, the plastic deformation of the soil can be reduced, the compressibility can be reduced, and the water permeability can be reduced, so as to improve the shear strength of the soil and reduce the settlement of the soil. , Reduce various road diseases caused by loose soil. [0003] However, for high-fill subgrades, even if layered compaction is carried out, there will be different de...

AI Technical Summary

Problems solved by technology

One is to determine the tamping energy during dynamic compaction, and the value is generally selected according to experience; second, the compaction height of subgrade filling during dynamic compaction is generally 3-5.0m; influences

That is to say, the determination of technical parameters related to the current high-fill embankment dynamic compaction and tracking is relatively random and lacks scientificity

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